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This works very well. It has a low and a high setting. The battery lasts very long, and I'm not sure how they do that. I make long-run LED flashlights and I'm not sure how they got a long run time with such a bright light unless they found a specialty low power, high output white LED emitter. It's also light and fits in the pants pocket. I put a lanyard on it so I wouldn't lose it in the couch cushions.